This species lacks a scape but has cymose inflorescences that are 4–11 cm long.

S. tenerrimum is found around Darwin in the Northern Territory of Australia and the Victoria River, though it hasn't been recollected there since the type location was chosen.

Its typical habitat is sandy soils that remain moist, associated with grasses and sedges.

Bean placed S. evolutum into synonymy and noted that the type specimen of S. mitrasacmoides was not located and thus the application of this synonym is not certain.

Tony Bean assessed this species' conservation status as data deficient in 2000.